Enhance robustness of AliyunpanFile JSON decoding

AliyunpanSDK.podspec

@@ -1,6 +1,6 @@
 Pod::Spec.new do |spec|
   spec.name         = "AliyunpanSDK"
-  spec.version      = "0.3.3"
+  spec.version      = "0.3.4"
   spec.summary      = "Aliyunpan OpenSDK-iOS"
 
   spec.description  = <<-DESC

Sources/AliyunpanSDK/AliyunpanSDK.swift

@@ -52,4 +52,4 @@ public class Aliyunpan {
     }
 }
 
-let version = "0.3.3"
+let version = "0.3.4"

Sources/AliyunpanSDK/Info.plist

@@ -15,7 +15,7 @@
 	<key>CFBundlePackageType</key>
 	<string>FMWK</string>
 	<key>CFBundleShortVersionString</key>
-	<string>0.3.3</string>
+	<string>0.3.4</string>
 	<key>CFBundleSignature</key>
 	<string>????</string>
 	<key>CFBundleVersion</key>

Sources/AliyunpanSDK/Model/AliyunpanFile.swift

@@ -18,7 +18,7 @@ public struct AliyunpanFile: Codable {
     public let file_extension: String?
     /// 文件 hash
     public let content_hash: String?
-    public var category: FileCategory?
+    public let category: FileCategory?
     public let type: FileType?
     public let mime_type: String?
     /// 缩略图
@@ -34,7 +34,50 @@ public struct AliyunpanFile: Codable {
     /// 视频信息
     public let video_media_metadata: MediaMetadata?
     /// 视频预览信息
-    public var video_preview_metadata: AudioMetaData?
+    public let video_preview_metadata: AudioMetaData?
+
+    init(drive_id: String, file_id: String, parent_file_id: String, name: String, size: Int64?, file_extension: String?, content_hash: String?, category: FileCategory? = nil, type: FileType?, mime_type: String?, thumbnail: URL?, url: URL?, created_at: Date?, updated_at: Date?, play_cursor: String?, image_media_metadata: MediaMetadata?, video_media_metadata: MediaMetadata?, video_preview_metadata: AudioMetaData? = nil) {
+        self.drive_id = drive_id
+        self.file_id = file_id
+        self.parent_file_id = parent_file_id
+        self.name = name
+        self.size = size
+        self.file_extension = file_extension
+        self.content_hash = content_hash
+        self.category = category
+        self.type = type
+        self.mime_type = mime_type
+        self.thumbnail = thumbnail
+        self.url = url
+        self.created_at = created_at
+        self.updated_at = updated_at
+        self.play_cursor = play_cursor
+        self.image_media_metadata = image_media_metadata
+        self.video_media_metadata = video_media_metadata
+        self.video_preview_metadata = video_preview_metadata
+    }
+
+    public init(from decoder: Decoder) throws {
+        let container = try decoder.container(keyedBy: CodingKeys.self)
+        self.drive_id = try container.decode(String.self, forKey: .drive_id)
+        self.file_id = try container.decode(String.self, forKey: .file_id)
+        self.parent_file_id = try container.decode(String.self, forKey: .parent_file_id)
+        self.name = try container.decode(String.self, forKey: .name)
+        self.size = try? container.decodeIfPresent(Int64.self, forKey: .size)
+        self.file_extension = try? container.decodeIfPresent(String.self, forKey: .file_extension)
+        self.content_hash = try? container.decodeIfPresent(String.self, forKey: .content_hash)
+        self.category = try? container.decodeIfPresent(AliyunpanFile.FileCategory.self, forKey: .category)
+        self.type = try? container.decodeIfPresent(AliyunpanFile.FileType.self, forKey: .type)
+        self.mime_type = try? container.decodeIfPresent(String.self, forKey: .mime_type)
+        self.thumbnail = try? container.decodeIfPresent(URL.self, forKey: .thumbnail)
+        self.url = try? container.decodeIfPresent(URL.self, forKey: .url)
+        self.created_at = try? container.decodeIfPresent(Date.self, forKey: .created_at)
+        self.updated_at = try? container.decodeIfPresent(Date.self, forKey: .updated_at)
+        self.play_cursor = try container.decodeIfPresent(String.self, forKey: .play_cursor)
+        self.image_media_metadata = try? container.decodeIfPresent(AliyunpanFile.MediaMetadata.self, forKey: .image_media_metadata)
+        self.video_media_metadata = try? container.decodeIfPresent(AliyunpanFile.MediaMetadata.self, forKey: .video_media_metadata)
+        self.video_preview_metadata = try? container.decodeIfPresent(AliyunpanFile.AudioMetaData.self, forKey: .video_preview_metadata)
+    }
 }
 
 extension AliyunpanFile: CustomStringConvertible {

Tests/AliyunpanSDKTests/JSONTest.swift

@@ -129,4 +129,54 @@ class JSONTests: XCTestCase {
             ISO8601DateFormatter().date(from: json["updated_at"]!),
             ISO8601DateFormatter().date(from: "2023-06-28T20:00:20.022+08:00"))
     }
+
+    func testNilArg() throws {
+        let json = """
+{
+      "trashed": null,
+      "name": "music.mp3",
+      "thumbnail": null,
+      "type": "filexx",
+      "category": "audioxx",
+      "hidden": false,
+      "status": "available",
+      "description": null,
+      "meta": null,
+      "url": "https://stg111-enet.cn-shanghai.data.alicloudccp.com",
+      "size": 561701,
+      "starred": false,
+      "location": null,
+      "deleted": null,
+      "channel": null,
+      "user_tags": null,
+      "mime_type": "audio/mpeg",
+      "parent_file_id": "root",
+      "drive_id": "drive_id1",
+      "file_id": "file_id1",
+      "file_extension": "mp3",
+      "revision_id": null,
+      "content_hash": "content_hash1",
+      "content_hash_name": "sha1",
+      "encrypt_mode": "none",
+      "domain_id": "stg111",
+      "user_meta": null,
+      "content_type": null,
+      "created_at": "2023-06-28",
+      "updated_at": "2023-06-28T12:00:20.022Z",
+      "local_created_at": null,
+      "local_modified_at": null,
+      "trashed_at": null,
+      "punish_flag": 0,
+      "video_media_metadata": null,
+      "image_media_metadata": null,
+      "play_cursor": null,
+      "video_preview_metadata": null,
+      "streams_info": null
+}
+"""
+        let file = try JSONParameterDecoder().decode(AliyunpanFile.self, from: json.data(using: .utf8)!)
+        XCTAssertNil(file.created_at)
+        XCTAssertNil(file.category)
+        XCTAssertNil(file.type)
+    }
 }